I have a broken off brass needle stuck in a caste aluminum hole. (It’s the pilot mixture jet on a carburetor). I was wondering if there was a chemical that would dissolve the brass while not reacting to the aluminum. Thank you!

Previously I’ve tried:

• using thermal expansion and contraction to loosen it
• attempting to poke it out
• using an air compressor to blow it out

Thanks!

I have a broken off brass needle stuck in a caste aluminum hole. (It’s the pilot mixture jet on a carburetor). 

I was wondering if there was a chemical that would dissolve the brass while not reacting to the aluminium.

Previously I’ve tried:

• Using thermal expansion and contraction to loosen it.
• Attempting to poke it out.
• Using an air compressor to blow it out.